My kitten used to do sloppy poos every so often but i changed his food from whiskas/felix to a much better food called Natures Menu pouches.. they are 70% meat whereas whiskas/felix pouches are only 4%.. also i changed his dry food from the whiskas/tesco which were low in meat content and put him onto Burns/James Belloved which are about 26% meat i think.. he loves both and his poos are quite normal now. I occasionally give him chicken if its plain but nothing else we eat.. and i dont give him milk
I do hope you sort your kitty out soon.
Oh and my kitten talks to me all the time, i do the same as you and say, whats the matter, and he goes meow!
Usually he's saying hello, play with me, feed me or give me a cuddle.